Description
Quality replacement service relay valve for trailer air brake systems. The World American WA110415 is a Sealco-pattern piston-type relay valve with a 4.0 PSI nominal crack pressure, one 3/4 in NPT reservoir supply port, one 3/8 in NPT control port and four 3/8 in NPT delivery ports. It threads directly onto the reservoir and replaces Sealco 110415 and Haldex 110415X.
Signs You Need a New Relay Valve
- Slow brake application or slow release on the axle group the valve feeds
- Brakes dragging or not fully releasing after the treadle is released
- Constant audible air leak from the valve exhaust with brakes applied or released
- Brakes applying with no treadle input
- Uneven braking between trailer axles
Specifications
| Manufacturer | World American |
|---|---|
| Part Number | WA110415 |
| Part Type | Service Relay Valve, Piston Type |
| Valve Pattern | Sealco LOV-4 style |
| Crack Pressure | 4.0 PSI nominal |
| Supply Port | (1) 3/4 in NPT |
| Control Port | (1) 3/8 in NPT |
| Delivery Ports | (4) 3/8 in NPT |
| Mounting | Nipple mounted — threads onto the reservoir via the supply port |
| Body Material | Aluminum |
| Orientation | Vertical |
Cross References
This part replaces or is equivalent to the following part numbers:
- Sealco: 110415, SE0110415
- Haldex: 110415, 110415X
- Meritor: RSL110415
- Automann: 170.110415
- Euclid: E-SL110415
- Freightliner: HDX110415X
- Mack: 5396-110415X
- PAI: 5253, LRV-5253
- Tectran: TV110415
- Dayton Parts: AV110415
Applications
This relay valve serves:
- Tandem-axle trailer service brake systems with four brake chambers
Verify port sizes and crack pressure against the valve you are replacing before ordering. This is a nipple-mounted valve that threads onto the reservoir through its 3/4 in supply port — it is not a two-bolt bracket-mounted valve and is not a Bendix R-12, R-14 or RE-6 equivalent.
